\begin{table}[htbp]\centering
\def\sym#1{\ifmmode^{#1}\else\(^{#1}\)\fi}
\caption{Demand Estimation: Instrumental Variable Estimate}
\begin{tabular}{l*{6}{c}}
\toprule
                    &\multicolumn{1}{c}{(1)}&\multicolumn{1}{c}{(2)}&\multicolumn{1}{c}{(3)}&\multicolumn{1}{c}{(4)}&\multicolumn{1}{c}{(5)}&\multicolumn{1}{c}{(6)}\\
                    &\multicolumn{1}{c}{\shortstack{DomBK}}&\multicolumn{1}{c}{\shortstack{DomNB}}&\multicolumn{1}{c}{\shortstack{DomCB}}&\multicolumn{1}{c}{\shortstack{ForBK}}&\multicolumn{1}{c}{\shortstack{ForNB}}&\multicolumn{1}{c}{\shortstack{ForCB}}\\
\midrule
dom\_exp, Winsorized fraction .01&       4.913\sym{*}  &       9.898\sym{**} &      13.205         &                     &                     &                     \\
                    &     (2.921)         &     (4.024)         &     (8.620)         &                     &                     &                     \\
for\_exp, Winsorized fraction .01&                     &                     &                     &       6.764\sym{*}  &      12.846\sym{**} &       7.565\sym{*}  \\
                    &                     &                     &                     &     (3.661)         &     (5.902)         &     (4.430)         \\
l\_gdp               &       0.795\sym{***}&       1.111\sym{***}&       0.333         &       1.673\sym{***}&       2.586         &       0.523         \\
                    &     (0.159)         &     (0.277)         &     (0.494)         &     (0.622)         &     (1.593)         &     (0.752)         \\
real\_gdp\_growth     &       3.849         &       6.721\sym{*}  &      12.174         &       3.230         &      18.992\sym{**} &       8.362         \\
                    &     (2.451)         &     (3.558)         &     (7.658)         &     (4.253)         &     (7.453)         &     (5.113)         \\
inflation           &      -3.820\sym{***}&      -4.075\sym{**} &      -5.766\sym{*}  &      -6.730\sym{***}&      -7.433\sym{*}  &      -5.758\sym{**} \\
                    &     (1.118)         &     (1.629)         &     (3.160)         &     (2.400)         &     (3.825)         &     (2.885)         \\
l\_exp\_ratio         &      -0.248         &      -0.400         &      -0.785         &      -0.448         &       0.721         &      -0.332         \\
                    &     (0.187)         &     (0.300)         &     (0.611)         &     (0.340)         &     (0.837)         &     (0.376)         \\
rate\_num\_loc        &       0.016         &      -0.002         &       0.051         &      -0.021         &       0.013         &       0.033         \\
                    &     (0.013)         &     (0.021)         &     (0.038)         &     (0.026)         &     (0.044)         &     (0.029)         \\
\midrule
Observations        &         354         &         325         &         292         &         354         &         306         &         344         \\
\bottomrule
\end{tabular}
\end{table}
